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Methods for Refining Crude Shale Oil Produced by in Situ Retorting.
NTIS: PB 229 217 :21 pages
Crude shale oil produced during in situ retorting by the Bureau of Mines at Rock Springs, Wyoming, was refined by three schemes. In the first, the crude oil was fractionated to raw naphtha and a residuum boiling above 400 deg f. The residuum was hydrogenated over cobalt molybdate catalyst at 815 deg f and 1,100 psig. The blended raw and 160 deg to 400 deg f hydrogenated naphthas were hydrodenitrified and then catalytically reformed. The hydrogenated oil boiling above 400 deg f was catalytically cracked. In the second scheme, the crude was hydrogenated over nickel-tungsten catalyst at 800 deg f and 1,500 psig. The hydrogenated fractions were processed by methods used in the first scheme. The third scheme resembled the second, but, prior to hydrogenation, the crude was "hydrostabilized" over cobalt molybdate at 500 deg f and 500 psig. Yields of reformate and cat-cracked gasoline as volume-percent of the crude, and research- method octane numbers (with 3 ml tetraethyllead) for the three methods were as follows: first method, 32 pct reformate, 90 octane; 19.5 pct cracked gasoline, 99.2 Octane. Second method, 29 pct reformate, 81.1 Octane; 21.3 pct cracked gasoline, 99.6 Octane. Third method, 28.2 pct reformate, 86 octane; 28.7 pct cracked gasoline, 95.9 Octane.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 229 217
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division